Pop the popcorn using your favorite method. Place popped corn into a large bowl and set aside.

Combine the sugars, corn syrup, water and salt in a heavy pan.

Bring to a boil, stirring occasionally. Continue cooking and stirring until the mixture reaches soft ball stage (230 degrees F).

Remove from heat and stir in the butter

Pour the caramel mixture over the popped corn and stir until all the caramel is distributed.

Serve and enjoy!